No, they didn’t. That’s bro science.
Brian Switek at his blog tears into the evidence arguing that hands have not evolved as weapons, and faces have become less robust with time. His post elicits some interesting responses from the authors.

“Chad King is a marine scientist and data analyst for NOAA’s Monterey Bay National Marine Sanctuary Integrated Monitoring Network (SIMoN). With SIMoN, he is responsible for the collection, analyses, and dissemination of spatial data relating to long-term monitoring projects. King also actively participates in the field as a part of the MBNMS research team. He earned a BS in marine biology at the University of California, Santa Cruz, and an MS in marine science at Moss Landing Marine Laboratories.”

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